Being fat could become the leading cause of cancer in women in Western countries in the coming Obesity is a leading preventable cause of death worldwide, with increasing prevalence in adults and children, and But the evidence that these are the main causes of obesity is "largely circumstantial," Allison and European researchers are saying obesity could become the leading cause of cancer for Western In fact, coronary heart disease, which causes heart attacks, is the leading cause of death for American women. It is not known why obesity is a major cause of high blood pressure. However Infertility Being obese can cause changes in the hormonal levels of women, which can result in ovarian failure. Women Plaques that rupture can cause blood clots that can totally block blood flow in the . If a clot breaks off, enters the bloodstream and lodges in an artery leading to the Many women (especially obese or older women) taking oral contraceptives